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Is Safari on iOS 6 caching $.ajax results?
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Call by name vs call by value in Scala, clarification needed
...s that each of its parameters may be pass-by-name or pass-by-value. Furthermore, "call-by-name" has nothing to do with names. => Int is a different type from Int; it's "function of no arguments that will generate an Int" vs just Int. Once you've got first-class functions you don't need to invent ...
Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)
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That was the explanation that an 8 year-old might understand. Here is the more technical version.
BCNF acts differently from 3NF only when there are multiple overlapping candidate keys.
The reason is that the functional dependency X -> Y is of course true if Y is a subset of X. So in any ta...
Detect if value is number in MySQL
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How do I create a folder in a GitHub repository?
...der name you want to create
Then type /. This creates a folder
You can add more folders similarly
Finally, give the new file a name (for example, .gitkeep which is conventionally used to make Git track otherwise empty folders; it is not a Git feature though)
Finally, click Commit new file.
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TypeError: ObjectId('') is not JSON serializable
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What is “:-!!” in C code?
...to fail the build.
The macro is somewhat misnamed; it should be something more like BUILD_BUG_OR_ZERO, rather than ...ON_ZERO. (There have been occasional discussions about whether this is a confusing name.)
You should read the expression like this:
sizeof(struct { int: -!!(e); }))
(e): Comput...
Cross-platform way of getting temp directory in Python
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@sorin 99.99% is a stretch. I'd say 50% is more realistic. Often I'm working with multiprocessing and then I could want the same temp dir for all processes.
– Acumenus
Jan 3 at 0:03
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Singleton by Jon Skeet clarification
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